Centeiftjgal ceeamer



` (No Model.) 2 Sheets-Sheet 1.

H. PAPE.

GENTRIPUGAL GREAMER.

No. 319,307. Patented June 2, 1885.

2 Sheets-Sheet 2.

(No Model.)

H. PAPE. lof:lwrmugl. GREAMER.

No. $19.307.A

Patented June 2, 1885.

NA PETERS. PhokLithogmyhor. Wmshingloll, D. C,

' 'TEM Erica.

HERMANN PAPE, or HAMBURG, GERMANY, AssrGNoR To RURRE-LL a WHITMAN, oE LITTLE EALLs, NEW YORK.

f oENTmFueAi.. Cesana.

SPECIFICATION forming part of Letters Patent N o. 319,307, dated June 2, 1885.

Application filed March 21, 1884. (No model.) Patented in Germany April 29, 1883, No. 25,331.

To all whom it may concern:

Beit known that I, HERMANN PAPE, asubject of the Emperor of Germany, residing in the cityof Hamburg, in the German Empire, have invented new and useful Improvements in Centrifugal Greamers, (for which I have obtained a patent in Germany, No. 25,331, bearing date April 29, 1883,) of which the following is a specification.

This invention relates to an improvement in that class of centrifugal separators which are employed for separating compound liquids into their constituent liquids of diiferent densities or gravities.

The object of my invention is to`so organize the machine that the liquid to be separated is fed to the revolving separating-drum under a predetermined pressure, and that the separated liquid is discharged from the drum by reason of the pressure which the liquid in the feed-conduit exerts upon the contents ofthe drum and not by centrifugal force, thereby out in the claims.,

In the accompanying drawings, consisting of two sheets, Figure 1 is a sectional elevation of my improved centrifugal separator. Fig. 2 is an end elevation of the same. Fig. 3 is a horizontal section on line .fr Fig. 1. Fig. 4 is a sectional elevation of the stufngbox on an enlarged scale. Fig; 5 is a sectional elevation showing a modied construction of the stuffing-box on an enlarged scale. Fig. 6 is a sectional elevation illustrating a different construction of my improved separator.

Like letters of reference denote like parts in the several figures.

The separator represented in Figs. 1, 2, 3, and A is more particularly designed for the separation of .full milk into cream and skimmilk, and its construction and operation will be hereinafter described with reference to such use, although it may be employed for separating various compound liquids.

A represents the frame of the machine, and B the revolving separating-drum supported on the same in a vertical position by means of a horizontal shaft, C, which is journaled in bearings c, formed on the frame of the machine.

D represents the milk-receptacle, which rceeives the full milk, and drepresents the pipe or conduit through which the full milk is conducted from the receptacle D to the separating-drum B. The lower portion, d', of the pipe d is arranged horizontally in line with the axis of rotation of the drum B and opens into the drum. The part d of the pipe d is supported in a bearing, e, which is formed in an arm, E, pivoted to a cross-bar, E', of the frame A at e.

The drum is preferably constructed in two parts, secured together by peripheral flanges b. The part of the drum adjacent to the feedpipe d is provided with a removable cover, F, secured at its periphery by thumb-screws f in an opening formed in said part of the 'drum concentric with the feed-pipe d.

f represents, a stuffing-box formed on the outer side of the cover F, and tted on the portion d of the feed-pipe so as to form a tight joint while permitting the drum to turn on the feed-pipe. In the construction represented in Fig. 5 the stuffing-box is secured to the stationary feed-conduit. When the packing is to be renewed,the cover is unscrewed from the feed-pipe.

g represents a deflecting-disk secured to the inner endof the pipe d', within the drum B, and h are openings formed in the feed-pipe d', between the disk g and the cover F, for the purpose of admitting the liquid from the feedpipe to the drum.

t represents a dischargepipe, secured centrally in the horizontal portion d of the feedpipe. The inner end of the pipe z' penetrates the disk g and opens Within the drum in the axis thereof.

j represents a stop cock or valve applied to the outer end of the pipe i for regulating the discharge of the liquid therefrom.

The pipe d is divided in such a manner that leasing this coupling and the thumb-screwf, the cover F, with the feed-pipe d', and the IOO lower portion ofthe pipe d attached thereto, can be swung away from the drum on the piv. ot e', as represented in Fig. 3, thereby giving access to the interior of the drum for clearing the same.

k represents a hub, whereby the drum- B is secured to the shaft C. The latter is provid-v ed with a central bore, Z, extending throughout its length, and connecting at its inner end with a pipe, m, arranged within-the drum, and opening near the periphery thereof. The outer end of the boreZ connects with a discharge-pipe, a, havinga stop cock or valve, n', whereby the flow of liquid from the bore Z is regulated. The discharge-piper is secured in a stationary bearing, and connected with the end of the shaft C by a stuffing-box, n2.

o represents a belt-pulley or other suitable device, whereby the drum B is rotated at a high speed in a well-known manner.

The receptacle D being filled with full milk, and the drum B being rapidly rotated, the drum becomes filled with milk which enters the drum through the pipe d eZ and openings h. The milk contained in the drum is separatedby the centrifugal force in a well-known manner into cream and skim-milk, the cream collecting near the axis of the drum, and the skim-milk, owing to its greater specific gravity, at the periphery of the drum. The cream enters the discharge-pipe i at the center of the drum by the pressure which thecolumn of liquid in the receptacle D and pipe d exerts upon the contents of the drum, and upon opening the cock or valve j the cream is discharged yfrom the pipe z' under said pressure in a continuous stream of greater or less volurne in aecordance'with the extent to which said cock or valve is opened. The skim-milk which collects at the periphery of the drum is driven into the central discharge-pipe, Z,

through the pipe m, also by the pressure exerted, as before stated, upon the contents of the drum, and not by centrifugal force, because the liquid contained in the pipe mis affected by the centrifugal force in an oppon site direction to that in which the liquid must flow through the pipe m in order to reach the y central discharge-pipe, Z.

rlhe iiow of the skim-milk from the dis-1 charge-pipeZ is regulated by the cock n in an obvious manner. the discharge of the separated liquidsl from It is therefore clear thatI the pipes Z and Z is due to the pressure which special importance in creaming milk, because the ordinary manner and not lin the frothy condition in which other centrifugal separators discharge the cream, owing to the agita- 7o tion which it undergoes in the rotating discharge-passages of such separators. My improved separator is consequently adapted to produce ordinary commercial cream or cream which is required for use in the form of cream and not to be churned.

As the drum B is always filled with the liquid to be separated, the quantity of liquid which can be separated inthe machine is proportionately larger than that which can be separated in a machine the drum of which is only partially lled with liquid while in operation. The pressure in the feed-conduit can be produced by the column of liquid, as above described, or by a pump or by steampressure applied to the surface of the liquid contained in the receptacle-D.

Fig. 6 illustrates a machine of the same character in which the axis ofthe separatingdrum is arranged in a vertical position.

Upon connecting the discharge-pipes i and Z tightly with suitable conduit-pipes the separated liquids can be conducted by the hydrostatic pressure existing in the drum to the proper receptacles, located at a distance laterally from the drum or above the drum. When the machine is used for creaming milk, the cream can be conducted by this means to the churns and the skim-milk to the cheesevats.

My improved machine is adapted to the separation of various compound liquids into the constituent liquids of different specic gravities or densities-for instance, the separation of crude oil into light and heavy oil; and it may also be used for separating oil from fish-scrap or oil-residues, and for other analogous separations.

IOO

I am aware that a centrifugal separator-having a hydrostatic feed and a peripheral discharge for the heavy liquid, and a central discharge for the light liquid, is not new, and also that a centrifugal separator having an axial feed and concentric discharge-pipes for the heavy and light liquids, is not new, and 'I do not claim these constructions; but

I claim as -my invention- 1. In a centrifugal separator, the combination, with a tight revolving drum, of an axial feed-conduit tightly connected with the separating-drum and supplying the liquid to the drum under pressure, and two central discharge-conduits through which the separated liquids of different densities are separately expelled by the pressure which the liquid in the feed-conduit exerts upon the contents of IIO the drum, and not by centrifugal force, sub- ISO liquid is discharged by the pressure in the feed-conduit and not by centrifugal force, substantially as set forth.

3. The combination, with a tight revolving separatingdrum, of an axial feed-conduit through which the liquid is supplied to the drum under pressure, a discharge-conduit arranged Within the feed-conduit, and a discharge-conduit arranged Within the shaft of the drum, substantially as described.

4. The combination, with a tight revolving separating-drum, of a stationary feed-conduit through which the liquid is supplied to the drum under pressure, a stationary dischargeconduit arranged Within the feed-conduit and receiving the liquid near the axis of rotation, and a discharge-conduit arranged in the-shaft of the drum and receiving the liquid near its periphery, substantially as described.

5. The combination, With a tight revolving drum and an axial feed-conduit through which pipe are attached, substantially as described. 3 5 In testimony whereof I have hereunto set v my hand this 25th day of February, 1884.

` HERMANN PAPE.

Witnesses: i

GUsrAv PAPE, H. HOUBEN. 

